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Headphoneus Supremus
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- May 27, 2006
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Quote:
So its passive + a buffer with the DAC seeing a very high 300R load ?
Looking at the other designs posted here I am thinking only Twisted Pairs would handle the high DC offset of the new PCM179x chips. This is what I ran into with the Borbely I/V stage. Works great with my AD1862 but when I tried to work it with my EZDAC (PCM1794) it couldn't deal with the high DC offset (I remember volts not mV.) This is because the new chips are single rail supplied.
Originally Posted by cetoole /img/forum/go_quote.gif I would think I/V is actually performed by the two 300ohm resistors going to v- through that zener diode. |
So its passive + a buffer with the DAC seeing a very high 300R load ?
Looking at the other designs posted here I am thinking only Twisted Pairs would handle the high DC offset of the new PCM179x chips. This is what I ran into with the Borbely I/V stage. Works great with my AD1862 but when I tried to work it with my EZDAC (PCM1794) it couldn't deal with the high DC offset (I remember volts not mV.) This is because the new chips are single rail supplied.